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HA16107P/FP, HA16108P/FP
PWM Switching Regulator for High-performance Voltage Mode Control
Description
The IC products in this series are primary control switching regulator control IC's appropriate for obtaining stabilized DC voltages from commercial AC power. These IC's can directly drive power MOS FET's, they have a timer function built in to the secondary overcurrent protection, and they can perform intermittent operation or delayed latched shutdown as protection operations in unusual conditions. They can be used to implement switching power supplies with a high level of safety due to the wide range of built-in functionality.
Functions
* * * * * * * * * * 6.45 V reference voltage Triangle wave generator Error amplifier Under voltage lockout protector PWM comparator Pulse-by-pulse current limitting Timer-latch current limitting (HA16107) ON/OFF timer function (HA16108) Soft start and quick shutdown Output circuit for power MOS FET driving
HA16107P/FP, HA16108P/FP
Features
* * * * * * * * Operating frequencies up to a high 600 kHz Built-in pre-driver circuit for driving power MOS FET Built-in timer latch over-current protection function (HA16107) The OCL enables intermittent operation by an ON/OFF timer for prevention of secondary overcurrent. (HA16108) The UVL function (under voltage lockout) is applied to both Vin and Vref. ON/OFF reset: an auto-reset function which is based on the time constant of an external capacitor and observation of drops in Vin. Since the over-voltage protection function OVP (the TL pin) only observes voltage drops in Vin, it is possible to use the OVP and ON/OFF pin for independent purposes. Built-in 34 V Zener diode between Vin and ground.
Ordering Information
Typical Threshold Voltage Product HA16107P HA16107FP HA16108P HA16108FP UVL1 Hi: 16.2 V Lo: 9.5 V Hi: 16.2 V Lo: 9.5 V Hi: 7.0 V Lo: 1.3 V On-off timer protection (intermittent operation possible) OVP 7.0 V Notes Timer latch protection Package DP-16 FP-16DA DP-16 FP-16DA
2
HA16107P/FP, HA16108P/FP
Pin Arrangement
Note 2 TL, ON/OFF E/O IN(-) NC GND IN(+) ST Vref Note 1
VIN OUT CL(+) VE CL(-) RT1 CT RT2
1 2 3 4 5 6 7 8 (Top view)
16 15 14 13 12 11 10 9
Notes: 1. In the SOP package models (HA16107FP and HA16108FP) pins 4, 5, and 13 are connected inside the IC. However, all must be connected to the system ground. 2. Pin 16 is TL (HA16107), ON/OFF (HA16108).
Pin Functions
* HA16107P, HA16108P
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VIN OUT CL (+) VE CL (-) RT1 CT RT2 Vref ST IN (+) GND NC IN (-) E/O TL, ON/OFF Pin Functions Input voltage Pulse output Current limiter Output ground Current limiter Timing resistor (rising time) Timing capacitor Timing resistor (falling time) Reference voltage output Soft start Error amp (+) input Ground NC Error amp (-) input Error output Timer latch (HA16107), ON/OFF (HA16108)
3
HA16107P/FP, HA16108P/FP
* HA16107FP, HA16108FP
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VIN OUT CL (+) GND GND RT1 CT RT2 Vref ST IN (+) GND GND IN (-) E/O TL, ON/OFF Pin Functions Input voltage Pulse output Current limiter Ground Ground Timing resistor (rising time) Timing capacitor Timing resistor (falling time) Reference voltage output Soft start Error amp (+) input Ground Ground Error amp (-) input Error output Timer latch (HA16107), ON/OFF (HA16108)
4
HA16107P/FP, HA16108P/FP
Block Diagram
* HA16107P/FP
TL 16
E/O 15
EA -
IN (-) 14
Error amp. +
NC 13
GND 12
IN (+) 11
ST 10
Vref 9
140 A
UVL1 16 A H L VL VH RQ S 4A On/Off latch (VTH = 7 V)
VIN 6.45 V zener type Ref. voltage Gen. UVL2 O V P UVL1 ST Triangle waveform H L
34 V Vref UVL2 4V 5V
+ + - PWM Comparator
UVL1 and UVL2 Pulse-by-pulse latch QR QCLM OUT QS Current limiter VE VC Vref
Triangle waveform OSC Triangle waveform Latch reset pulse ON duty pulse
3.4 V 10 A
1 VIN
2 OUT
3 CL (+)
4 VE
5 CL (-)
6 RT1
7 CT
8 RT2
* HA16108P/FP
ON/OFF 16 E/O 15
EA - Error amp. +
IN (-) 14
NC 13
GND 12
IN (+) 11
ST 10
Vref 9
140 A
UVL1 16 A H L VL VH RQ S 4A On/Off latch (VTH = 7 V)
VIN 6.45 V zener type Ref. voltage Gen. UVL2 O V P UVL1 ST Triangle waveform H L
34 V Vref UVL2 4V 5V
+ + - PWM Comparator
UVL1 and UVL2 Pulse-by-pulse latch QR QCLM OUT QS Current limiter VE VC Vref
Triangle waveform OSC Triangle waveform Latch reset pulse ON duty pulse
3.4 V 10 A
1 VIN
2 OUT
3 CL (+)
4 VE
5 CL (-)
6 RT1
7 CT
8 RT2
Note: Dotted lines apply to the SOP package model (pins 4, 5, and 13: ground)
5
HA16107P/FP, HA16108P/FP
Function and Timing Chart
Triangle Waveform and PWM Output
* Timing chart (during normal operation) VTH 4.2 V typ E/O CT Triangle waveform is output to CT pin
2VBE 0V VIN 0V
VTL 2.2 V typ
VRT2
OUT
Dead band tDB * Oscillator equivalent circuit 9 x2 x2 RT2 x2 8 I1 I1 I2 VRT2
tON
Vref (connected internally)
- +
6 RT1 CT
7
2I2 x2 0.6 V
Comparator for triangle waveform oscillation - +
The x 2s are transistors whose emitter area is doubled. I1 = Vref - 2VBE RT1 Vref - 2VBE I2 = RT2 tDB = tON
CT x RT1 x 2V 0.4 x CT x RT1 (s) Vref - 2VBE RT2 tDB (s) 2RT1 - RT2
Du max = fOSC
RT2 2RT1 1 - Du max (Hz) tDB
Note: When fOSC is high, the actual value will differ from that given by the formula due to the delay time. Determine the correct constants after constructing a test circuit.
6
HA16107P/FP, HA16108P/FP
1. Timing in Normal Operation Timing in these ICs is based on a triangular voltage waveform. The rising edge (leading edge) defines the deadband time t DB. The falling edge (trailing edge) defines the ON-duty control band tON . PWM output is on in the area within tON that is bounded above by the triangle wave V CT and error output V E/O . The following pin outputs are related to PWM control: * * * * C T (pin 7): triangle-wave voltage output E/O (pin 15): error output voltage R T2 (pin 8): ON-duty pulse output voltage OUT (pin 2): PWM pulse output (for driving the gate of a power MOS FET)
2. Triangle Oscillator, Waveform and Frequency The triangle oscillator in these ICs generates a triangular waveform by charging and discharging timing capacitor CT with a constant current, as shown in the equivalent circuit. The CT charge current is:
I(CTchg) = I1 = VREF - 2VBE RT1 VREF - 2VBE RT2
The discharge current is:
I(CTdischg) = 2I2 - I1, where I2 =
In these equations Vref (reference voltage) is typically 6.45 V, and VBE (base-emitter voltage of internal transistors) is about 0.7 V. The deadband time is:
tDB = CT x RT1 x 2V + 0.8 s VREF - 2VBE
0.4 x CT x RT1 + 0.8 s
The ON-duty time is:
tON = tDB x RT2 2RT1 - RT2
The 0.8 s in these equations is a correction term for internal circuit delays. The maximum ON-duty is
Du max = RT2 2RT1
The oscillating frequency is:
fOSC = 1 tDB + 0.8 s 1 - Du max 1 = (Hz) 0.8 x CT x RT12 + 0.8 s 2RT1 - RT2 1 0.8 CT RT1 + 0.8 s
When RT1 = RT2, the maximum ON-duty is 50%, and:
fOSC (Hz)
This approximation is fairly close, but it should be checked in-circuit.
7
HA16107P/FP, HA16108P/FP
3. Programming of Maximum ON-Duty (Du Max) The preceding equations should be used to program the deadband or maximum ON-duty. The following table gives a summary.
Condition Triangle waveform RT1 > RT2 RT1 = RT2 RT1 < RT2
Du max
Less than 50%
50%
Greater than 50%*
Note: In a primary-control switching regulator, Du Max > 50% is dangerous because the transformer will saturate.
Soft Start and Quick Shutdown One purpose of the soft-start function is to protect the switching controller and power MOSFET from surges at power-up. Another purpose is to let the secondary-side DC voltage rise smoothly. When power goes off, the quick-shutdown function rapidly discharges the capacitor in the soft-start circuit (and at the same time switches the PWM output off) to prepare for the next power-on. The soft-start function in these ICs lets the PWM output develop smoothly from zero to the designated pulse width at power-up. The soft-start voltage is the 3.8 V voltage value of an internal Zener diode, so the PWM output is able to start widening gradually as soon as the soft-start function starts operating. The softstart function will start promptly even if CST is large. The soft-start and quick-shutdown modes are selected automatically in the IC, under control of the UVL signal.
8
HA16107P/FP, HA16108P/FP
* Timing waveforms
Level determined by transformer 16.2 V VIN 9.5 V 6.45 V 5V 4V 0V 4.2 V 3.8 V 2.2 V 0V VE/O VOUT (PWM pulse) VIN 0V Soft start Normal operation (Time t) Quick shutdown Vref VIN
Vref
VST VCT, VST, VE/O
VCT
CST discharge
Vref 9 CST ST 10 3.8 V Zener diode 10 A
Vref from Vref from UVL2 (Effective for quick shutdown)
+ + -
PWM comparator VCT
E/O 15 7
Note: The soft-start time constant is determined by CST and the constant-current value (typically 10 A).
9
HA16107P/FP, HA16108P/FP
Vref Protection Functions: Overvoltage and Undervoltage Vref overvoltage and undervoltage conditions are detected by the overvoltage detection circuit and UVL2 circuit. PWM output shuts down when Vref 8 V. UVL2 detects undervoltage with hysteresis between approximately 4 V and 5 V. PWM output also shuts down below these voltages. It follows that PWM output will shut off whenever the Vref pin is shorted to the power supply (VIN) or ground (GND). PWM output also shuts off when VIN is turned on or off. The following diagram shows how these protection functions operate when power comes on and goes off (Vref < 6.45 V), and when a high external voltage is applied to the Vref pin (Vref > 6.45 V).
PWM output shutdown region Power-off, or shorted to ground
PWM OUT
PWM output operating region
Shorted to power supply
Power-up
PWM output shut-down region
Vref 0 4V 5V 6.45 V 8 V 10 V Vref OVP
UVL2
1. Current-Limiter Circuit The current limiter pin (CL) is connected to the emitter of an npn transistor, as shown in the block diagram. The threshold voltage is 240 mV typ. The switching speed of this circuit is approximately 100 ns from detection of overcurrent to shut-down of PWM output. Switching speed increases with the strength of the signal input to the CL pin. Instead of simple pulse-by-pulse current limiting, in these ICs the current limiting circuit is linked to the timer-and-latch or ON/OFF timer circuit, and also detects the degree of overcurrent. The overcurrent value is determined from the point at which current limiting is triggered in the ON-duty cycle. With a large overcurrent (causing current limiting to operate even at a small ON-duty), the IC automatically shortens the timer time.
10
HA16107P/FP, HA16108P/FP
Undervoltage Lockout and PWM Output The undervoltage lockout function turns off the PWM pulse output when the controller's supply voltage goes below a designated value. These ICs have two undervoltage lockout circuits. The UVL1 circuit senses the supply voltage V IN. The UVL2 circuit senses the Vref voltage. A feature of these ICs is that PWM output is turned on only when both voltages are above designated values. Otherwise, the IC operates in standby mode. The two built-in undervoltage lockout circuits make it possible to configure an extremely safe power supply system. PWM output will shut down under a variety of abnormal conditions, such as if Vref is shorted to ground while VIN is applied.
* UVL1 (VIN and Vref) IIN 9.5 V 16.2 V *1
0 Vref
10 V
20 V
30 V 6.45 V
34 V
VIN Notes: 1. Breakdown voltage of the internal Zener diode (Vz = 34 V typ). 2. Hysteresis characteristic. VIN
*2 0 10 V 20 V 30 V
* UVL2 (Vref and PWM output) Vref 4V 0 10 V 5V VIN 6.45 V
20 V
30 V
Operating region OUT
0 10 V 20 V PWM output shut-down region * UVL1 and UVL2 VIN (UVL1) Vref (UVL2) PWM OUT Standby mode L L L
30 V
VIN
H L L
H H OUT
L H L
Note: Double circles indicate standby mode.
11
HA16107P/FP, HA16108P/FP
Timer Latch and ON/OFF Timer The HA16107 has a built-in timer-latch function. The HA16108 has a built-in ON/OFF timer function. The timer-latch function is an overvoltage protection function that combines latched shutdown of PWM output with a timer function to vary the time until latched shutdown occurs according to the overcurrent value. A dedicated voltage detection pin is provided in addition to Vref overvoltage protection. The ON/OFF timer function is equivalent to the above timer-latch function without the latch. If overcurrent is detected continuously, PWM output shuts down temporarily, then normal operation resumes. This process repeats, temporary shutdown alternating with normal operation. Both the timer-latch function in the HA16107 and the ON/OFF function in the HA16108 wait for an interval after overcurrent detection before shutting down PWM output. The interval is determined by capacitor CTM and the value of the charge/discharge current supplied internally from the IC. Normal operation therefore continues if a single overcurrent spike is detected, while if continuous overcurrent is detected, the current and voltage droop curves for the secondary-side output have sharp characteristics. 1. Use of Timer-Latch Pin (HA16107) * Timer-Latch Usage See external circuit 1 in the following diagram. Under continuous overcurrent, the CML switch turns on, charging CTM with 12 A. PWM output shuts down when the voltage at pin 15 exceeds 7 V. * Overvoltage Protection Usage See external circuit 2 in the diagram. This configuration is suitable when overvoltage is detected by an OVP signal received through an optocoupler from the DC output on the secondary side of an AC/DC converter. PWM output shuts down when the OVP signal allows the voltage at the TL pin to exceed 7 V. The shutdown is latched. VIN must go below approximately 6.5 V (VINR2) to release the latched state.
* External circuit 1 16 A from CML OVP with latch timer 4 A HA16107 7.0 V VTL A 0V OCL detected continuously (activating pulse-by-pulse current limiter) Notes: 1. Path A is followed if the OCL input stops before VTH is reached. 2. Path B is followed if OCL is detected continuously until the latch point is reached. 3. The latch function is cleared when VIN goes below approximately 7.0 V. t VTH Latch (PWM output shuts down) B OVP signal (from secondary) * External circuit 2 VIN
15 CTM
TL
12
HA16107P/FP, HA16108P/FP
2. Use of ON/OFF Timer Pin (HA16108) * External Circuit
16 A ION + 16 IOFF 4 A HA16108 from CML OVP with latch timer
* ON/OFF Timer Operation
tOFF tON
7.0 V
VTHH
1.2 V 0V
VTHL
t OCL detected PWM OCL detected (PWM output on) output (PWM output on) shut down Pulse-by-pulse current limiting
tON
C x 5.8 V (0.9 - Du) x 16 A - 4 A
tOFF C x 5.8 V 4 A Notes: 1. C is the capacitance of an external timing capacitor connected between this pin and ground. 2. Du is the ON-duty of the PWM output when overcurrent limiting is triggered. 3. The values of tON and tOFF for TL can be determined by the same equations as given for the ON/OFF timer, except that 5.8 V (VTHH - VTHL) becomes VTHH = 7 V. 4. If the timer goes off during soft start or in the undervoltage lockout region, after recovery, output will come on after the soft-start time or after the rise time to the undervoltage lockout release point, which is determined by the time constant.
13
HA16107P/FP, HA16108P/FP
Absolute Maximum Ratings (Ta = 25C)
Item Supply voltage Output current (DC) Output current (peak) Current limiter voltage Error amp input voltage E/O output voltage RT1 pin current RT2 pin current Power dissipation Operating temperature range Storage temperature range Symbol VIN IO Iopeak VCL VIEA VIE/O I RT1 I RT2 PT Topr Tstg Rating Value 30 0.2 2 +4, -1 Vref Vref 500 5 680 -20 to +85 -55 to +125 Units V A A V V V A mA mW C C 1, 2 Notes
Notes: 1. For the "FP" products (SOP package), this value is when mounted on a 40 by 40 by 1.6 mm glass epoxy substrate. However, this value must be derated by 8.3 mW/C from Ta = 45C. When the wiring density is 10%, and 11.1 mW/C from Ta = 64C when the wiring density is 30%. 2. For the "P" products (DIP package), this value is valid up to 45C, and must be derated by 8.3 mW/C above 45C. 3. In the case of SOP, use center 4 pins, (4), (5), (12), (13) for solder-mounting and connect the wide ground pattern, because these pins are available for heat sink of this IC. 700 600 500 400 300 200 100 -20 0 20 45C 64C 30% Wiring density 10% Wiring density
Power dissipation PT (mW)
40
60
80
100
120
140
Ambient temperature Ta (C)
14
HA16107P/FP, HA16108P/FP
Electrical Characteristics (Ta = 25C, VIN = 18 V, fOSC = 100 kHz)
Section Reference voltage Item Output voltage Line regulation Load regulation Temperature stability Short circuit current Over voltage protection (Vref OVP voltage) Triangle wave generator Maximum frequency Minimum frequency Voltage stability Symbol Min Vref Line Load Vref/ Ta I OS Vrovp 6.10 -- -- -- 30 7.4 Typ 6.45 30 30 40 50 8.0 Max 6.80 60 60 -- -- 9.0 Unit V mV mV ppm/ C mA V Vref = 0 V 12 V V IN 30 V 0 mA IO 10 mA Test Conditions Note
fmax fmin f/fo 1
600 -- -- -- 270 -- 1.9 3.8 1.7 -- -- -- -- -- 80
-- -- 1 1 300 -- 2.2 4.2 2.0 1 0.2 1 2 0.8 140 140
-- 1 3 -- 330 1.0 2.5 4.6 2.3 3 2.0 -- 10 2.0 -- --
kHz kHz % % kHz s V V V % % % mV A A A VO = 2 V VO = 5 V RT1 = RT2 = 27 k CT = 470 pF 12 V V IN 30 V (Dmax - Dmin)/2 -20C Ta +85C (Dmax - Dmin)/2 12 V V IN 30 V fo 1 = (fmax + fmin)/2 -20C Ta +85C fo 2 = (fmax + fmin)/2 RT1 = RT2 = 27 k CT = 120 pF
Temperature stability f/fo 2 Frequency accuracy PWM Minimum deadband comparator pulse width Low level threshold voltage High level threshold Differential threshold Deadband width initial accuracy Deadband width voltage stability Deadband width temperature stability Error amp Input offset voltage Input bias current Input sink current f OSC t DB VTL VTH VTH DB1 DB2 DB3 VIO I IB Iosink
Output source current Iosource 80
15
HA16107P/FP, HA16108P/FP
Electrical Characteristics (Ta = 25C, VIN = 18 V, fOSC = 100 kHz) (cont.)
Section Error amp (cont.) Item High level output voltage Low level output voltage Voltage gain Band width (-) Common mode voltage (+) Common mode voltage Overcurrent detector Symbol Min VOH VOL GV BW VCM- VCM+ Vref - 1.5 -- -- -- 1.2 -- 0.216 -- Typ -- -- 55 15 -- -- 0.240 180 Max -- 0.5 -- -- -- Vref - 1.5 0.264 250 Unit V V dB MHz V V V A A ns V A V V V V V (VINTH - VINTL) VCL+ = 0 V 1, 2 VCL = -0.3 V CL; open VCL = +0.35 V Isink = 1 mA VST = 2.0 V 1, 2 Test Conditions I O = 10 A I O = 10 A f = 10 kHz Note
(+) Threshold voltage VTH + (+) Bias current I B+
(-) Threshold voltage VTH - (-) Bias current Response time I B- t off VSTH Isink VINTH VINTL
-0.264 -0.240 -0.216 V -- -- 3.2 7 14.7 8.5 5.2 4.5 3.5 950 100 3.8 10 16.2 9.5 6.2 5.0 4.0 1350 -- 4.4 13 17.7 10.5 7.2 5.5 4.5
Soft start
High level voltage Sink current
Under voltage lockout 1
VIN high level threshold voltage VIN low level threshold voltage
Threshold differential VTH voltage Under voltage lockout 2 Vref high level threshold voltage Vref low level threshold voltage VrTH VrTL
Notes: 1. Only applies to the HA16107P, HA16108P 2. The terminal should not be applied under -1.0 V.
16
HA16107P/FP, HA16108P/FP
Electrical Characteristics (Ta = 25C, VIN = 18 V, fOSC = 100 kHz) (cont.)
Section Item Symbol Min VTHH VINR2 VTHL2 V 6.5 6.0 1.0 2.0 Typ 7.0 6.5 1.3 3.0 12 4 1.7 -- -- 40 60 160 16 Max 7.5 7.0 1.6 -- 16 5.5 2.2 -- 0.5 -- -- 250 20 Unit V V V V A A V V V ns ns A mA (VINTL - VINR2) Over current detection mode TL(ON/OFF) terminal = 4 V Iosink = 0.2 A Iosource = 0.2 A Iosink = 1 mA CL = 1000 pF CL = 1000 pF VIN = 14 V VIN = 30 V, CL = 1000 pF, f = 100 kHz VIN = 30 V, f = 100 kHz, Output open VIN = 14 V 1 Test Conditions Note Timer latch, Latch threshold voltage ON/OFF timer*2 VIN reset voltage Reset voltage Differential threshold to UVL low voltage Source current (OCL mode) Sink current (latch mode) Output Low voltage High voltage Low voltage (standby mode) Rising time Falling time Total Standby current Operation current
Isource 8 Isink VOL1 VOH VOL2 tr tf Ist I IN1 2.5 -- VIN - 2.2 -- -- -- -- --
Operation current
I IN2
--
12
16
mA
ON/OFF latch current VIN - GND Zener voltage
I IN3 VZ
-- 30
350 34
460 --
A V
Notes: 1. Only applies to the HA16108P/FP. 2. Timer latch: HA16107P/FP. ON/OFF timer: HA16108P/FP.
17
HA16107P/FP, HA16108P/FP
Note on Standby Current In the test circuit shown in figure 1, the operating current at the start of PWM pulse output is the standby current. If the resistance connected externally to the Vref pin (including R T2 ) is smaller than that of the test circuit, the apparent standby current will increase.
VIN
Vref
HA16107 Series
Rref
Figure 1 Standby Current Test Circuit
18
Ist
+
CIN
IIN
HA16107P/FP, HA16108P/FP
Application Note
* Case: When DC power is applied directly as the power supply of the HA16107/HA16108, without using the transformer backup coil. * Phenomenon: The IC may not be activated in the case of a circuit in which VIN rises quickly (10 V/100 s or faster), such as that shown in figure 2. * Reason: Because of the IC circuit configuration, the timer latch block operates first. * Remedy (counter measure): Take remedial action such as configuring a time constant circuit as shown in figure 3, to keep the VIN rise speed below 10 V/100 s. If the IC power supply consists of an activation resistance and backup coil, as in an AC/DC converter, The VIN rise speed is usually around 1 V/100 s, and there is no risk of this phenomenon occurring.
Output Input VIN
HA16107 Series VIN GND Feedback
Figure 2 Example of Circuit with Fast VIN Rise Time
Input Time constant circuit R 51 VIN Output
VIN 18 V 1 F C
HA16107 Series Feedback GND
Figure 3 Sample Remedial Circuit
19
HA16107P/FP, HA16108P/FP
Characteristic Curves
Operating Current vs. Power Supply Voltage
40 Ta = 25C RT1 = RT2 = 27 k CT = 470 pF 30 Operating current (mA) fOSC = 100 kHz
20
10
0
10
20
30
40
Power supply voltage (V)
Latch Current vs. Power Supply Voltage
2.0 Ta = 25C RT1 = RT2 = 27 k CT =470 pF 1.5 Latch current (mA) fOSC = 100 kHz
1.0
0.5
0
10
20 Power supply voltage (V)
30
40
20
HA16107P/FP, HA16108P/FP
Standby Current vs. Power Supply Voltage
400 Ta = 25C RT1 = RT2 = 27 k CT =470 pF 300 Standby current ( A) fOSC = 100 kHz
200
100
0
4
8
12
16
20
Power supply voltage (V)
Output VOH vs. Reference Voltage
20 Ta = 25C VIN = 20 V CT = 470 pF 15
Output VOH (V)
10
Vref UVL2 Voltage Vref OVP Voltage
5
0
2
4
6
8
10
Reference voltage (V)
21
HA16107P/FP, HA16108P/FP
Reference Voltage vs. Power Supply Voltage 8 Ta = 25C RT1 = RT2 = 27 k CT =470 pF fOSC = 100 kHz
Reference voltage (V)
6
4
2
0
10
20 Power supply voltage (V)
30
Output OFF Time vs. VCL 400 Ta = 25C RT1 = RT2 = 27 k CT =470 pF fOSC = 100 kHz
300 Output OFF time (ns)
VCL
200
CL = 100 pF 100 CL = unloaded
0
0.2 VCL (V)
0.3
0.4
22
HA16107P/FP, HA16108P/FP
Output ON Duty vs. Error Input Voltage 60 50 Output ON duty (%) 40 30 20 10 Ta = 25C RT1 = RT2 = 27 k CT =470 pF fOSC = 100 kHz
0
1
2
3
4
5
Error input voltage (V)
23
HA16107P/FP, HA16108P/FP
Reference Voltage and PWM Out vs. CL(+)
Vref 0
0.1
0.2
0.3
0.4
3.0
PWM OUT 0
0.1
0.2 CL(+)
0.3
0.4
3.0
Reference Voltage and PWM Out vs. CL(-)
Vref
0
-0.1
-0.2
-0.3
-0.4
-1.0
PWM OUT
0
-0.1
-0.2 CL(-)
-0.3
-0.4
-1.0
24
HA16107P/FP, HA16108P/FP
Timing Resistance vs. Deadband Duty
20 VIN = 18V Ta = 25C Timing resistance RT1,RT2 (k) 15 CT = 470 pF fOSC 100 kHz 10 RT1
RT2 5
0 30 40 50 60 70 80
Deadband duty (%)
Temperature Fluctuation vs. Ambient Temperature
2000 VIN = 18V RT1 = RT2 = 27 k Temperature fluctuation (ppm) 1000 CT = 470 pF fOSC = 100 kHz
0
-1000
-2000 -20 0 25 50 75 85
Ambient temperature (C)
25
HA16107P/FP, HA16108P/FP
Frequency Variance vs. Ambient Temperature
10 VIN = 18V RT1 = RT2 = 27 k CT = 470 pF Frequency variance (%) 5 fOSC = 100 kHz
0
-5
-10 -20 0 25 50 75 85 Ambient temperature (C)
Frequency Variance vs. Ambient Temperature
10 VIN = 18V RT1 = RT2 = 27 k CT = 120 pF 5 Frequency variance (%) fOSC = 300 kHz
0
-5
-10 -20 0 25 50 75 85
Ambient temperature (C)
26
HA16107P/FP, HA16108P/FP
Frequency Variance vs. Ambient Temperature
10 VIN = 18V RT1 = RT2 = 13 k CT = 120 pF 5 Frequency variance (%) fOSC = 600 kHz
0
-5
-10 -20 0 25 50 75 85 Ambient temperature (C)
Output ON Duty Variance vs. Ambient Temperature
10 VIN = 18V
Output ON duty variance (%)
5
0 f = 100 kHz f = 300 kHz -5
f = 600 kHz
-10 -20 0 25 50 75 85 Ambient temperature (C)
27
HA16107P/FP, HA16108P/FP
Oscillator Frequency vs. Timing Resistance 600 500 VIN = 18 V Ta = 25C 300
C
T
=
12
0
pF
27
0
pF
Oscillator frequency (kHz)
100 90 70 50
47
0
pF
82
0
pF
30
33 00 pF
10 9 7
5
7
10
30
50
70
100
Timing resistance RT1 (= RT2) (k)
28
HA16107P/FP, HA16108P/FP
Vout Output Rising Waveform
40 30
Test circuit
Ta = 25C RT1 = RT2 = 27 k CT = 470 pF
Vout (V)
Current probe
20 10 0 CL 1000 pF
VIN
fOSC = 100 kHz TL OUT CL (+)
IO + 1F
27 k 470 pF
IO (mA)
500 0 -500
R T1 CT ST CST +1F
RT2 Vref 27 k
200 ns/div
* Current probe: Tektronix AM503
Vout Output Falling Waveform
40 30
Vout (V) I O (mA)
20 10 0 500 0 -500
200 ns/div
29
HA16107P/FP, HA16108P/FP
Operating waveform at the TL pin
Test circuit HA16107
VIN VIN = 18V RT1 = RT2 = 27 k CT = 470 pF fOSC = 100 kHz TL CL
1000 pF
B
When overcurrent is input at the point where the duty cycle is 0%.
7
+ 1 F SW
OUT CL(+)
Clock
6 5 4 VTL (V) 3 2 1 0
A
27 k
470 pF
RT1 CT ST
CST + 1 F
RT2 Vref 27 k
Triangle wave CL(+) when input at a duty of 0%
tON
tOFF
0.5 sec/div
Output pulse shutdown region SW ON SW OFF
CL(+) when input at a duty of 30%
t1
t2
When overcurrent is input at the point where the duty cycle is 30%.
7 6
a b
Du = t1 x 100 (%)
t2
Enlargement of section
c
A
5 4 VTL (V) 3 2
A B
VTL CTL discharged at 4 A CTL discharged at 12 A
t
Enlargement of section
B
1 0
VTL
CTL discharged at 4 A
tON
tOFF
0.5 sec/div
a b
t
to
b
: PWM pulse output is High : The point where overcurrent is detected
Output pulse shutdown region SW ON SW OFF
b
to
c
: PWM pulse output is Low.
30
HA16107P/FP, HA16108P/FP
Operating waveform at the ON/OFF pin
Test circuit HA16108
VIN
When overcurrent is input at the point where the duty cycle is 0%.
7 6
B CL
1000 pF Clock 27 k
V IN = 18V R T1 = R T2 = 27 k C T = 470 pF f OSC = 100kHz ON/OFF OUT CL(+) R T1 CT R T2 ST + 1 F C ST +
1 F
5
470 pF
V ON/OFF (V)
4 3 2
A
27 k
1 0
Triangle wave CL(+) when input at a 0.5 sec/div duty of 0% t ON t OFF t ON t OFF t ON t OFF CL(+) when input at a duty of 30% t1 Output pulse shutdown region
SW ON
SW OFF
t2
When overcurrent is input at the point where the duty cycle is 30%.
7
B
Du =
t1 x 100 (%) t2
Enlargement of section A
6 5
a V TL
b
c
V ON/OFF (V)
4 3 2 1 0
A
CTL discharged at 4 A CTL discharged at 12 A t Enlargement of section B V TL CTL discharged at 4 A
0.5 sec/div t ON t OFF t ON t OFF
t a to b : PWM pulse output is High. b : The point where overcurrent is detected.
SW ON
SW OFF
Output pulse shutdown region
b to c : PWM pulse output is Low.
31
HA16107P/FP, HA16108P/FP
Error Amplifier Characteristic
60
Open Loop Gain AVO (dB)
20
AVO
45 90 135
0 10 k
30 k
100 k 300 k
1M
3M
10 M
180 30 M 100 M
Input signal frequency fIN (Hz)
Examples of Drooping Characteristics of Power Supplies Using these ICs
5.0 ON VOUT (DC) (V) Normal operation Latch state here 2.5 OFF 0 1 2 IOUT (DC) (A) 3 4 A B A B Heavy load Light load Pulse by pulse Current limiter operation
HA16107 (Latch shut-down) 5.0 ON VOUT (DC) (V) OFF 2.5 A B A B Heavy load Light load Pulse by pulse Current limiter operation
0
1
2 IOUT (DC) (A)
3
4
HA16108 (Intermittent operation by means of ON/OFF timer)
32
Phase Change (deg)
40
0
HA16107P/FP, HA16108P/FP
Operating Circuit Example
* Flyback Transforrmer Application Example (IC Vref used as system as reference voltage) Schottky barrier diode Bridge Diode Start-up Resistor 140 V El-30 Trans former HRP 24 + 5V OUTPUT - 1.5 3W Current Sense FILTER 50 V 22 F AC INPUT + HZP 16 TL QCLM -++ 16 + OVP Detector Timerlatch Capacitor 16 V 1 F 330 k 23T HRP 32 18.9 V
82 k 1W 51 HZP 16
2SK1567
40T
6T
+ -
470 F
RFI
VIN 1 OUT VC VE OUT
16
A
E/O - 15
4 A
Triangle wave PWM Comparator UVL1&UVL2 P{ulse by pulse latch
140
A
110
CL(+) 3 Current Sense L.P.F.
2
UVL1 H L
ON/OFF Latch
(V TH= 7V)
RQ S
VL VH
IN(-) Error amp. 14 510 k NC Phase Comp.
QR QS
Zener type reference voltage generation circuit
6.45 V
51
VE 4
4700 pF
68 k
13
Vref
Current limiter
UVL1 ST
VIN
O V P
CL(-)
UVL2 H L
12
5 6 CT 8 7
4V 5V
GND 34 V Vref IN(+) 3.225 V ST - +16 V 33k 33k 11
27 k RT1 470 pF
3.4 V 10 A
UVL2
10
Soft Start Cap.
fosc = 100 kHz, Dumax = 50%
1 F 9 Vref
Frequency, Max, Duty Setting
RT2 27 k HA16107P/FP
+- 1 F 16 V 6.45 V
33
HA16107P/FP, HA16108P/FP
* Forward Transformer Application Example
Bridge diode
Power thermister +
AC INPUT
200 V - 100 F DFG1C8
HRW26F
47 H HA17431P 330 + 16 V 3.3 k - 1000 F 1.8 k + - 3.3 F 4.7 k B Secondary error amplifier +
RB 1 W 82 k (Start-up resistor) 10 k + 0.47 F -
0.3 50 T
0.5 8T *
DC OUT (5 V)
(Soft start Timer latch 1 F - 1 F capacitor) - + capacitor + 16 15 14 13 12 11 10 9 TL E/O IN NC IN ST Vref (+) (-) HA16107P/108P CL VOUT (+) 1234
0.3 50 T
0.5 8T *
+ 50 V -- F 22
-
HZP16 13 k 2SK1567 TLP521
5 13 k
RT1 CT CT2 678 470 pF
51 110 3W 1.5 (Current sense)
* Bifiler transfomer core size EI-30 equivalent product
4700 pF
(Current sense filter) 51
HA16107P/FP, HA16108P/FP
* When OVP signal is inserted at CL(+) pin VIN
RB
OVP detector VIN
OUT
CL(+) TL
+ 1 F
When the OVP detection Zener diode turns on, latch shutdown of the output is performed after the elapse of the time determined by the capacitance connected the TL pin.
35
HA16107P/FP, HA16108P/FP
Package Dimensions
Unit: mm
19.20 20.00 Max 16 9
7.40 Max 6.30
1 1.3
1.11 Max
8
0.51 Min
2.54 Min 5.06 Max
7.62
2.54 0.25
0.48 0.10
0.25 - 0.05 0 - 15
Hitachi Code JEDEC EIAJ Mass (reference value)
+ 0.13
DP-16 Conforms Conforms 1.07 g
Unit: mm
10.06 10.5 Max 16 9
5.5
1
*0.22 0.05 0.20 0.04
8 0.80 Max
2.20 Max
0.20 7.80 + 0.30 -
1.15 0 - 8 0.70 0.20
1.27 *0.42 0.08 0.40 0.06
0.12 M
Hitachi Code JEDEC EIAJ Mass (reference value) FP-16DA -- Conforms 0.24 g
*Dimension including the plating thickness Base material dimension
36
0.10 0.10
0.15
HA16107P/FP, HA16108P/FP
Cautions
1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products.
Hitachi, Ltd.
Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
URL
NorthAmerica : http:semiconductor.hitachi.com/ Europe : http://www.hitachi-eu.com/hel/ecg Asia (Singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm Asia (Taiwan) : http://www.hitachi.com.tw/E/Product/SICD_Frame.htm Asia (HongKong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htm For further information write to:
Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 778322 Hitachi Asia Pte. Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: <852> (2) 735 9218 Fax: <852> (2) 730 0281 Telex: 40815 HITEC HX
Copyright ' Hitachi, Ltd., 1998. All rights reserved. Printed in Japan.
37
HA16107P/FP, HA16108P/FP
Revision Record
Rev. 0.0 0.1 0.2 Date Oct. 11, 1994 Oct. 11, 1994 Nov. 12, 1994 Contents of Modification Initial issue Initial issue Initial issue Drawn by A. Koizumi A. Koizumi A. Koizumi Approved by M. Yamamura M. Yamamura M. Yamamura
38

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